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Finding the Fourth Proportional to 8,393,824.80, 12,590,737.20 and 8,207,200.80

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Solution

The fourth proportional to 8,393,824.80, 12,590,737.20 and 8,207,200.80 is: 12,310,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,393,824.80 : 12,590,737.20 = 8,207,200.80 : x
  2. Step 2: Convert to fraction form
    8,393,824.80/12,590,737.20 = 8,207,200.80/x
  3. Step 3: Cross multiply
    8,393,824.80x = 12,590,737.20 × 8,207,200.80
  4. Step 4: Simplify right side
    8,393,824.80x = 103,334,708,420,429.75
  5. Step 5: Solve for x
    x = 103,334,708,420,429.75/8,393,824.80
  6. Step 6: Final answer
    x = 12,310,801.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.